CDKN2A and uterine cervix carcinoma in situ: In this study, Mongolian cervical cancer patients was designed to detect gene expression of p16INK4a, Notch1, and hTERC in HPV16‐infected tissues including cervical cancer, CIN‐III, CIN‐II, CIN‐I, uterine leiomyoma, and chronic cervicitis.